Refractory brick construction



prll 14, 1936. y l- B, TRACY 2,037,289

REFRAC'IORY BRICK CONSTRUCTION Filed May 28, 1954 INVENTOR.

ATTORNEY4- Patented Apr. 14 1936 l l. I

UNITED STATES PATENT OFFICE REFBACTORY BRICI( CONSTRUCTION y Jay B. Tracy, Upper Darby, Pa., assignor to Gen- -A eral Refractories Company, Philadelphia, Pa.,

a corporation of Pennsylvania l -v I Appiieauan May za, 1934, serial No. 727,849

' 3 Claims. (Cl. 1410"-86) My invention relates to refractory furnace linings and locomotive lire boxconstruction and particularly to a novel brick adapted to be uti- `lized in building circular furnace linings and fire box bridge walls in certain types of kilns, furnaces, stacks andlocomotives. In some' form of kilns, furnaces, stacks and locomotives sections are of -cylindrical crosssection and in order 'to build a lining oi'l bridge wall in therein, a large number of brick shapes have'been required. l n An object 'of my invention is to provide a brick, a plurality of which maybe used for building these walls or linings, the single shape being all l5 that is required for the entire wallv or lining. A

brick of the required shape provides for interlocking engagements with other duplicate bricks lat the sides or edges and is of generally arcuate outline in end elevation. Thus, by a single pat- 20 tern a plurality of the bricks may be constructed for use in building the described linings and bridge walls.

'I'he invention will b'e more readily understood by referring to the accompanying drawing, in

Fig. 1 is a transverse Asectional view a locomotive nre box showing the application of a3h bridge wall chamber; v 30 Fig, 2 is a longitudinal sectional view taken on the center line to illustrate the -interlocking feaand lining in a barrel combustion ture in a bridge wallv and also in a circular lining;

Fig. 3 is a fragmentary enlarged elevation of 4the wall;

L as rig. 4 is a fragmentary sectional view of the wall and lining taken on the line I-I of Fig. 3 illustrating more clearly rangement;

. Figs. 5 and 6 are perspective views. showing 40 the ,brick with interlocking means for bridge wall construction; l l Figs. 7 and 8 are similar-views, `showing the interlocking arrangement for circular construc tion.

45 The outline `of the inner shell Il ofa boiler was selected to illustrate the arrangement of` a bridge vwall andlining; the section shown in Fig.

2 being just to the rear ,of the i'lue sheet which is not shown. Figs. 3 andi.' show an enlarged 5o elevation and section, in order to more clearly illustrate the interlocking of the 44brick when used as abridge wall 6r lining. In a'ilre. box of the type shown, the round. barrel-like forward end of the combustion chamber renders the ss construction of a'brldgc wall or lining somewhat lal area. This describes the brick' as applied to 'the bridgewalls.

the interlocking air--` dimeuit, and to tnat'end i have Adevised a brick Il, the plurality of which may be. combined in order to form the wall or lining. 'I'he brick consists of a body of generally arcuate form in end elevation, the degree of' curvature lbeing so ai- 5 ranged that the brick will conform to -various sizes of circular chambers. For bridge wall construction. the bottom `face ofthis brick has a continuous recess I2 therein,while the top face has a continuous rib I3,v so proportioned that the 10 adjacent superposed brick' will interlock. Likewise one side end -II of each brick is curved in a radius equal to about half the transverse diam eter or thickness, the opposite side end having a correspondingly shaped recess I5, likewise the convexly curved side has a rib or proiection I6 an'd the concaveside has a groove or recess I1.

Athe.rib or groove being of decreasing depth to a point of disappearance into the adjacent surface.- In other words,.the rib I6 which is a continuationA .o of the rib Il disappears and merges into therecess I2 on' the bottom face of the brick. Perhaps the construction can better be explaindf-by saying that, in effect the two ends of the brick being held against movement, ine central poruanis gs bodily displaced diagonally upward.4 llhis provides vthe, necessary ribs and for complete interlocking, without changing ytlie cross section- YBy further reference to Figs. 1 and 2, and to 7 and 8 which show the outline ofan inner shell of a boiler with bridge wall and protective lining,

it will be .noted I have 'shown a modification of this novel arcuate brick with bosses and recesses on the sides to providemeans of interlocking in the longitudinal or vertical direction as the case might be. To the aforementioned brick which I have indicated at Il, I have added a boss or pro- Jection I8 and a recess or groove Il which form n lcomplementary bosses and recesses for locking andholding a plurality of bricks in a complete ring-or circle and for interlocking with an adjacent ring or. circle -to complete a lining of 'any s .cylindrical vessel and prevent relative movement.-

The ribs and'recesses also act as a baille or protecting agent against the infiltration of the elements, adding further protection to the shell Il.

In the brick for lining purposes the shape is the .o

same as that used for the bridge wall and the sides are formed with complementary projections and i recesses. However; instead yof interlocking ribsJ4 and recesseson the faces as in the'case of the bridge'l wall bricks'the! are provided on the ends. l

" l sides.

Thus each brick in the lining is locked on four Thus it will be seen that a brick o! generally arcuate' form in shape and elevation may becom-V bined with other bricks of duplicate shape to build `up a transverse bridge wall or protective lining within a curved space, a single brick pattern being used for each construction.

While in the drawing I.- have shown the top` surface of the bridge wall as irregular, it will be understood that it may be made flat and regular if desired by breaking the top bricks to provide a level surface.

Obviously changes in form and arrangement 'of the brick maybe made, within limits, without departure from the spirit of my invention. For example, a narrower section of material consti- "tuting a mere rib and groove may be preferred,

the principle ofthe interlock remaining the sa 1e.

I claim:

a-bridge wall extending across the same, said wall being composed of a plurality of duplicate oblong, at bricks of generally arcuate formrelative to a.transverse horizontal axis, one side of each brick being concave and the other side convex, va. portion ot the body of the brick between the ends being displaced diagonally relative to the end portions of the brick, whereby to provide a projecting portion on one face and on one sideand a recess of an extent the same as the pirojection on the other face and on the other s de.

being concave and the other side edge' convex, a

portion oi' the body of the brick between the ends being displaced diagonally relative to the end 'portions of the brick, whereby to provide a projecting portion on one face and on'one side and a recess of an extent the same as-the projection on the other face and on the other side. l

3. A generally oblong, at brick consisting of an arcuate body of refractory material the curva- Y A `ture being relative to a transverse horizontal axis, 1. lin rebox construction, the combination with a generally circular combustion chamber of the sides of which at the ends ofithe brick are respectively convex and concave, and a portion of the body of the brick between the ends is l'ocated to provide a projection on one face and one side and a recess on the diametrically opposite face and side.

JAY B. TRACY.

2. ,A generauy oblong, dat brick for nrebox col 

